Is there any possibility that my cable box blow the speakers of LCD?

Question

I am asking this bcos I bought new LCD just 2 weeks ago and when I hooked my TV with cable box through AV cable I got the bursting sound. I thought it is bcoz of bad speakers then I exchange my LCd and unfortunately I have the same problem with the new TV. Now I am ready to exchange this one too but trying to find out if something wrong in my home like the way I am doing connections or something wrong with the cable box. Pls suggest. I dont wanna mess up my new LCD again. Thanks

Answer 1

The problem is probably the audio input to the TV from the cable box is too high of a signal, and it is overdriving the audio amplifier in the TV. This is not necessarily damaging your speakers or the audio amplifier in the TV. But, it will cause clipping of the amplifier, which results in a raspy sound.

On most cable boxes, there is a control that allows you to set the output volume of the cable box. Either this is a straightforward volume control on the box, or it's a setting in a set-up menu that allows you to set the output volume of the cable box while playing (watching TV) and/or recording a program.

The default setting from the manufacturer should be 92 (on a scale of 100). Find out how to adjust this control (some cable companies have a "how to use your cable box and remote" channel, or you can just call customer service) and set it lower than the current setting. That is, if it's at 100, set it to closer to 90. If it's at around 90, set it closer to 80.

If this still doesn't fix the problem, it may be that the audio circuit in the cable box is bad. If possible, try running the AV cable to an input on a stereo receiver and see (actually hear) if the sound is still bad when played through your stereo speakers. And make sure you turn the sound down all the way (or nearly so) on the stereo when you hook up the cables. Otherwise you'll jump out of your skin when the loud blast of audio - or a loud 60-cycle hum - comes out of your stereo speakers.

Answer 2

Hi,
Hey what not use your stereo to listne to you tv's sound. Yes, yours blew up because the volume was too high on the box for very low wattage speakers on your LCD. If you have a stereo with about 150 watts output, you could reduce the volume on your cable box and put the volume up on your stereo. Check to see if your stereo has got audio in. If it does connect the cable box's audio out L and R directly to stereo and use the tv just for the video.
Good Luck!

Answer 3

Set cable box volume to 92 percent. And don't turn the volume of the TV up too loud.